Switch to a more complete method of filtering hoisted layers

src/gpu/GrLayerCache.h

Index: src/gpu/GrLayerCache.h
diff --git a/src/gpu/GrLayerCache.h b/src/gpu/GrLayerCache.h
index cdbd0806ccb4e0694a8054d98bad4b7b3c931b78..11c8f079ceb7ef9be607d8870e3bce6efb3973fd 100644
--- a/src/gpu/GrLayerCache.h
+++ b/src/gpu/GrLayerCache.h
@@ -164,7 +164,7 @@ public:
         SkASSERT(SK_InvalidGenID != pictureID);
 
         if (fPaint) {
-            if (fPaint->getImageFilter() && fPaint->getImageFilter()->canFilterImageGPU()) {
+            if (fPaint->getImageFilter()) {
                 fFilter = SkSafeRef(fPaint->getImageFilter());
                 fPaint->setImageFilter(NULL);
             }